Is there any way you can find out which missions were done on which difficulty? I did the entire campaign on hard with a friend but I don't think I did Day 6 on hard, and I don't want to waste time trying each mission over and over again just for 80gs

Is there any way you can find out which missions were done on which difficulty? I did the entire campaign on hard with a friend but I don't think I did Day 6 on hard, and I don't want to waste time trying each mission over and over again just for 80gs